The Vents‑US TT 125 is a compact mixed‑flow inline duct fan for 5‑inch (125 mm) ventilation runs. Its two‑speed AC motor and hybrid impeller are housed in a removable body that mounts to a bracket for easy service and cleaning. On high speed it moves up to 157 CFM (≈267 m³/h) at 0 in. w.g., with HVI‑rated performance of 120 CFM at 0.2 in. w.g.; low speed provides 121 CFM at 0 in. w.g. The UV‑resistant plastic housing uses long‑life ball bearings and includes an integrated high/low/off switch and power cord. Typical applications include supply or exhaust runs in apartments, workshops, and small grow spaces where a mixed‑flow fan’s higher static‑pressure capability is preferred over basic axial units.